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2022-03-10Use implicit capture syntax in format_argsT-O-R-U-S-24/+23
This updates the standard library's documentation to use the new syntax. The documentation is worthwhile to update as it should be more idiomatic (particularly for features like this, which are nice for users to get acquainted with). The general codebase is likely more hassle than benefit to update: it'll hurt git blame, and generally updates can be done by folks updating the code if (and when) that makes things more readable with the new format. A few places in the compiler and library code are updated (mostly just due to already having been done when this commit was first authored).
2022-03-04Consistently present absent stdio handles on Windows as NULL handles.Dan Gohman-9/+70
This addresses #90964 by making the std API consistent about presenting absent stdio handles on Windows as NULL handles. Stdio handles may be absent due to `#![windows_subsystem = "windows"]`, due to the console being detached, or due to a child process having been launched from a parent where stdio handles are absent. Specifically, this fixes the case of child processes of parents with absent stdio, which previously ended up with `stdin().as_raw_handle()` returning `INVALID_HANDLE_VALUE`, which was surprising, and which overlapped with an unrelated valid handle value. With this patch, `stdin().as_raw_handle()` now returns null in these situation, which is consistent with what it does in the parent process. And, document this in the "Windows Portability Considerations" sections of the relevant documentation.
2022-03-04Rollup merge of #93965 - Mark-Simulacrum:owned-stdio, r=dtolnayDylan DPC-228/+18
Make regular stdio lock() return 'static handles This also deletes the unstable API surface area previously added to expose this functionality on new methods rather than built into the current set. Closes #86845 (tracking issue for unstable API needed without this) r? ``````@dtolnay`````` to kick off T-libs-api FCP
2022-02-24word wrpaDylan DPC-5/+5
2022-02-24word wrpaDylan DPC-6/+9
2022-02-23Update library/std/src/io/error.rsDylan DPC-1/+1
Co-authored-by: Josh Triplett <josh@joshtriplett.org>
2022-02-23add some more summary from pr discussionDylan DPC-1/+1
2022-02-23add some more summary from pr discussionDylan DPC-2/+4
2022-02-23add matching to errorkindDylan DPC-0/+8
2022-02-13Make default stdio lock() return 'static handlesMark Rousskov-228/+18
This also deletes the unstable API surface area previously added to expose this functionality on new methods rather than built into the current set.
2022-02-10Rename to `InvalidFilename`Yuki Okushi-6/+5
2022-02-10Fix description of FilenameInvalidJosh Triplett-1/+1
Co-authored-by: Mara Bos <m-ou.se@m-ou.se>
2022-02-10Rename `FilenameTooLong` to `FilenameInvalid`Yuki Okushi-2/+2
2022-02-04Add more tests for io::Error packing, and fix some comments that weren't ↵Thom Chiovoloni-16/+101
quite accurate anymore
2022-02-04Update documentation somewhatThom Chiovoloni-12/+26
2022-02-04Use wrapping pointer arithmetic in the bitpacked io::ErrorThom Chiovoloni-8/+15
2022-02-04Elaborate some in the documentation and respond to some review commentsThom Chiovoloni-8/+19
2022-02-04Update library/std/src/io/error/repr_bitpacked.rsThom Chiovoloni-1/+1
Co-authored-by: the8472 <the8472@users.noreply.github.com>
2022-02-04Fix comment typos noticed by code review.Thom Chiovoloni-2/+2
Co-authored-by: Ralf Jung <post@ralfj.de>
2022-02-04Address address comments, improve comments slightlyThom Chiovoloni-5/+20
2022-02-04Optimize io::error::Repr layout on 64 bit targets.Thom Chiovoloni-4/+364
2022-02-04Hide Repr details from io::Error, and rework `io::Error::new_const`.Thom Chiovoloni-91/+178
2022-01-31Rollup merge of #93090 - jyn514:errorkind-asstr, r=dtolnayEric Huss-1/+17
`impl Display for io::ErrorKind` This avoids having to convert from `ErrorKind` to `Error` just to print the error message.
2022-01-20delete `Stdin::split` forwarderTaylor Yu-24/+1
2022-01-19Write for Cursor with a custom AllocatorJosh Stone-7/+23
2022-01-19impl Write for Cursor<[u8; N]>Josh Stone-0/+35
2022-01-19Refactor tests of Write for Cursor<_>Josh Stone-44/+28
2022-01-19`impl Display for io::ErrorKind`Joshua Nelson-1/+17
This avoids having to convert from `ErrorKind` to `Error` just to print the error message.
2022-01-13Remove `&mut` from `io::read_to_string` signatureNoah Lev-2/+2
`@m-ou-se` [realized][1] that because `Read` is implemented for `&mut impl Read`, there's no need to take `&mut` in `io::read_to_string`. Removing the `&mut` from the signature allows users to remove the `&mut` from their calls (and thus pass an owned reader) if they don't use the reader later. [1]: https://github.com/rust-lang/rust/issues/80218#issuecomment-874322129
2022-01-09Compute most of Public/Exported access level in rustc_resolveLamb-21/+14
Mak DefId to AccessLevel map in resolve for export hir_id to accesslevel in resolve and applied in privacy using local def id removing tracing probes making function not recursive and adding comments Move most of Exported/Public res to rustc_resolve moving public/export res to resolve fix missing stability attributes in core, std and alloc move code to access_levels.rs return for some kinds instead of going through them Export correctness, macro changes, comments add comment for import binding add comment for import binding renmae to access level visitor, remove comments, move fn as closure, remove new_key fmt fix rebase fix rebase fmt fmt fix: move macro def to rustc_resolve fix: reachable AccessLevel for enum variants fmt fix: missing stability attributes for other architectures allow unreachable pub in rustfmt fix: missing impl access level + renaming export to reexport Missing impl access level was found thanks to a test in clippy
2021-12-26fix typo: intialized -> initializedHiroshi Kori-2/+2
2021-12-16Rollup merge of #91947 - ibraheemdev:io-error-other, r=joshtriplettMatthias Krüger-0/+27
Add `io::Error::other` This PR adds a small utility constructor, `io::Error::other`, a shorthand for `io::Error::new(io::ErrorKind::Other, err)`, something I find myself writing often. For some concrete stats, a quick search on [grep.app](https://grep.app) shows that more than half of the uses of `io::Error::new` use `ErrorKind::Other`: ``` Error::new\((?:std::)?(?:io::)?ErrorKind:: => 3,898 results Error::new\((?:std::)?(?:io::)?ErrorKind::Other => 2,186 results ```
2021-12-14add `io::Error::other` constructorIbraheem Ahmed-0/+27
2021-12-14Fix a bunch of typosFrank Steffahn-3/+3
2021-12-09Auto merge of #81156 - DrMeepster:read_buf, r=joshtriplettbors-226/+807
Implement most of RFC 2930, providing the ReadBuf abstraction This replaces the `Initializer` abstraction for permitting reading into uninitialized buffers, closing #42788. This leaves several APIs described in the RFC out of scope for the initial implementation: * read_buf_vectored * `ReadBufs` Closes #42788, by removing the relevant APIs.
2021-12-07correct typoDrMeepster-1/+1
Co-authored-by: Josh Triplett <josh@joshtriplett.org>
2021-12-02Document how `last_os_error` should be usedChris Denton-1/+7
2021-11-21Mention std::io::Error::from(ErrorKind) in Error::new() docsGeorg Brandl-0/+6
This conversion is not very discoverable for the cases where an error is required without extra payload.
2021-11-02formattingDrMeepster-1/+1
2021-11-02fix change clobbered by rebaseDrMeepster-7/+23
2021-11-02implement review suggestionsDrMeepster-9/+31
2021-11-02fix test failure from trying to assume_init too muchDrMeepster-1/+1
2021-11-02add safety commentsDrMeepster-0/+2
2021-11-02Don't reinitialize hereDrMeepster-1/+8
2021-11-02more efficent File::read_buf impl for windows and unixDrMeepster-3/+10
2021-11-02consolidate 2 unsafe blocks into 1DrMeepster-2/+2
2021-11-02read_bufDrMeepster-240/+767
2021-10-31Rollup merge of #90430 - jkugelman:must-use-std-a-through-n, r=joshtriplettMatthias Krüger-0/+14
Add #[must_use] to remaining std functions (A-N) I've run out of compelling reasons to group functions together across crates so I'm just going to go module-by-module. This is half of the remaining items from the `std` crate, from A-N. I added these functions myself. Clippy predictably ignored the `mut` ones, but I don't know why the rest weren't flagged. Check them closely, please? Maybe I overlooked good reasons. ```rust std::backtrace::Backtrace const fn disabled() -> Backtrace; std::backtrace::Backtrace<'a> fn frames(&'a self) -> &'a [BacktraceFrame]; std::collections::hash_map::RawOccupiedEntryMut<'a, K, V> fn key_mut(&mut self) -> &mut K; std::collections::hash_map::RawOccupiedEntryMut<'a, K, V> fn get_mut(&mut self) -> &mut V; std::collections::hash_map::RawOccupiedEntryMut<'a, K, V> fn get_key_value(&mut self) -> (&K, &V); std::collections::hash_map::RawOccupiedEntryMut<'a, K, V> fn get_key_value_mut(&mut self) -> (&mut K, &mut V); std::env fn var_os<K: AsRef<OsStr>>(key: K) -> Option<OsString>; std::env fn split_paths<T: AsRef<OsStr> + ?Sized>(unparsed: &T) -> SplitPaths<'_>; std::io::Error fn get_mut(&mut self) -> Option<&mut (dyn error::Error + Send + Sync + 'static)>; ``` Parent issue: #89692 r? `@joshtriplett`
2021-10-31Rollup merge of #89068 - bjorn3:restructure_rt2, r=joshtriplettMatthias Krüger-3/+1
Restructure std::rt (part 2) A couple more cleanups on top of https://github.com/rust-lang/rust/pull/89011 Blocked on #89011
2021-10-30Add #[must_use] to remaining std functions (A-N)John Kugelman-0/+14
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